Paid ticket endpoint

POST `/tickets/{identifier}/paid` endpoint

identifier - this could be either ticket id or ticket code.

Will set ticket status to open.

Response status codes:

Status Code	Interpretation
200	OK - Everything worked as expected
400	Bad Request. Please check error code in response body (see Error codes)
403	Forbidden. You do not have access for such request

Error response (status=400):

{
    "code": 102,
    "message": "Ticket with `E36E20` identifier is not found"
}

Error response (status=400):

{
    "code": 117,
    "message": "Ticket has to have `reserved` status in order to do this action."
}